Furnace-wall construction



Feb. 24, 1931. E. A. REESE 1,794,031

FURNACE WALL CONSTRUGTION v Filed Nov. 18, 1929 2 Sheets-Sheet 1 I II IIII H' II IL II I ILI I II TI II IL I II IL I II II ILHJI IL:]I

IL II IL II I II I 12, v LJIAIILILJLJLJLJLJLLIL I IL I ILJL LII IL IILIIJLJLII I II' IQII ImIJ JI II IL II II )I H II II I IL II I-EII Feb.24, 1931. E A REsE 1,794,031

FURNACE WALL CONS TRUCTION Filed Nov. 18, 1929 2 Shee'bS-Sheet 2' i toryunits `V Patented Feb.` 24,` 1931 *UNITED- STM-ES Neron PATENT OFFICE iDWARD A. *nnnsnron MfLwAUxnnwisccNsrn rUBNAcE-WALL consrnoorronapplication med Ngvemter 18, 1929. serial No. 408,052. p

time prevent the heatfrom `damaging` the a 1 10 wall, while the outerportion of the wall is especially constructed sothatthe samecan becoollled by currents of air passingthrough the wa i i 4 i i 'i Anotherobject of the present invention is V115 the provision of an improvedconstruction in furnace ``and similar walls, which willprovide for theremoval and repair oficertain sections'of the wall without interferingwith adjoining sectionsso that any of the refraccan be readily removedand easily replaced.` s I a i i A still further object of theyinventionisthe a provision of furnace wall construction wherethe inner wallportion is built up in units :a 251 with appropriate supporting elementsfor' the units whereby any one of the units canbe remoyed for repairsorreplacement and the outer wall is maintained in spaced relation with theinner wall by a plurality `ofI-beams, the outer wall being of suchconstruction that it will be readily cooled by the air passing throughthe two Walls. With'the above and other objects in View, the inventionconsistsinthe novel features of construction, the combination andarrangement of parts hereinafter more fully set forth, pointed outinthehclaimsand shown in the accompanying drawings wherein: s Figurel isasectional view through one side of the wall withan'adjacentside wallinele- ``Vation; i I

L Figure is a horizontal section looking in -planview upon a portion ofone of the units with the end parts thereof broken away.

In a great many furnaces in use at the present time, the fuel' usediscoal of 1Very fine i particleswhich is known as mine shavings,

and is rather diificult to feed this type of fuel toa furnace `andproducethe proper combustion due tothe dampness of the material,

line fuel intorthe furnace, the blowing ofthe i a desired.

` portion of the I'beams. i

upon U-plates 8, the inner side walls of which and it is, therefore, oneof the principal oh- ]'ects :of my invention rto provide a furnace Wallconstruction whereby the air is heated within the walls and used forblowing this fuelzinto the furnace underdraftwill have a tendency to dryit to a certain extent before it reaches theeombustion chamber. i i a Inthe construction of furnaces at the preventtime, it isj somewhat(lifiicult to remote to deteriorated parts, and it is, therel'ore,another object of this improved eonstructirm to so construct the wallsso that aiportion of the Walls could be removed for repairs When TheWall structure is preferably laid upon a cement base 1, and positionedin opposed parallel relation upon the base 1 are the U- beams 2.` TheseU-heams 2 are properly positioned according to the size and Shape of FUthe Wallto be built on the cementbase and are bolted together at theirupper edges by means of the angular plates 3. These plates 3have theirhorizontal portions extending across upon one side of the U-beams 2 with`a securing bolt 4 passingthrough one of the side fianges ofeach U-beamand through the plates as is clearly illustrated in Figurel. I to s aResting upon the upper edges of the U- beams 2 are the verticallydisposed I-beams 5 held in position upon the U-beamsby means of theVertically disposed sdes of the plates 3 with fastening`` bolts 6extend'ing through the plates and through the intermediate the I-beams 5form 'The U-beams 2 and thegeneralframe Work of my improved wall anddivide the entire Wall structure into ini The wall Sections forming thesides, back and front of the furnace are built of ayplurality offirebrick 7 With each wall section resting,r

ar are bolted to the outermost U-beami, as shown in Figure 1.

- Upon the outer surface of each outer Wall section ia a layer ofinsulating asbestos 8 and arranged over the exterior of the asbestos W*lining is a steel heusing Thelower edge of this steel'housing 9 isbolted to the outer i i side wall of vthe U-plate 'bymeans of the screwbolts 10. i

In the construction of each outer wall section, it is advisable toinsert at difierent heights in. this structure, additional `U-plates 8'which are also secured in position by havf 'ing ltheir inner sidewallsattached vtotheV I-beamsand their outer side'walls attached, to thesteel housing 9.

In constructing the inner wall Sections, it

i is first advisable to build up a lower` section generally inclicatedat 11 by means of ordinary fire-brick. In the'present instance, I

have illustratedthe lower section 11 com- 'prising six layers of firebrick and upon top of thissection 11 is laid a plurality ofcom-'paratively large tile indicated'at-12. The

sides and ends of the tile. 12 whichare laid upon the upper-edge of thesection 11V extends beyond the upper .layer of firebrick andV rest uponangle plates l13 which are bolted to one of the'cross flanges'of the I-ebeams, as shown in Figure 1. In--order tol provide for the expansion ofthe sides :and

,ends of'the larger tile 12, suitableV angular notches 15 are cut intothe tile to receivev the Vinner cross Vportions of the I-beams andVthese notches are cut sufiieiently large to provide for the contractionand expansion of the tileV when heated. i i i Upon the first layer oftile 12 is a second section of fire bric-k indicated vat 16, thissection being built up the same as the first seetion 11, and upon top ofthis section is anotherl layer of comparatively larger tile 12' whichare supported upon the angular brackets 13' attachedl'to the inner crossportions lof the I-beams. i' i The wall maybe built as high as desir-'able following the Outline as 'described above with either a layer oflarge tile at the top of the wall or fire brick, and it will be apparentthat by positioning the comparatively large tile 12 and supporting themupon the angullar brackets 13l and 13', the Vsection of fire I brickarrang'ed beneath each layer'of tiling can be 'easily removed withoutinterfering with a'seeti'on'on either side thereof.

It will also ,be noted that at the ends of the U-beams 2, there is asuitable opening for the reception of air from the'V outside of thefurnace wallwhich will pass inwardly and circulate outwardly and aroundthrough the furnace wall between |the inner and outer Sections, and iffound desirable 'can be' drawn off from the top of the wall orany othersuitable location to be used for feeding the comparatively fine fuel tothe furnace. The

-housing 9 can bev traced and connected at j the corners by means of theangularjplates 17, the sides of which are bolted to the adja- 'centSections of the steelhousing 9, as shown in Figure 2.

;Attention is also directed to. the fact that at each corner of thefurnace, the tile sectlon do'es not extend out over the passagewaysbetween the I-beam's, but eXtends out Sufiiciently so that' the tileareproperly supportedV upon the angular plates 13 and 13', but leavesconsiderable space vat the corners` for the circulaton of the "air;between theztwo'wall sections'., o e

It will be apparent from the foregoing that vloy construeting a furnacein the above manjner, the inner wall section will stand a high degree ofheat due to the cooling space upon the exterior thereofand, regardless'of the heat developedwithinthe inner wall sections, the outer steelhousing 9 willremain 'in a comparatively cool state :due not only to theCooling, space between the inner and`` outer wall Sections, but-also dueto thelining 8 of constructing s fire-brick sections or any partsthereof can ,be 'quickly andeasily removed for repairing withoutdisturbing any ofthe other seetions.

It Awill also be. noted that this type offurnace:

Wall construction can be put up at a comparatively low costwhentalinguinto considerationV the veflici'ency of. such a structure.

-; While I have shown and deseribed the preferred embodiment of myinvention, it will be apparent that slight changes may be made in theconstruction whenputting the invention'v into practice without.:departing`V from the spirit of the same or the scope of the'appendedclaims. I.

1. Ina wall constructiomspaced inner and outer wall Sections, a vbasemember' at the bottom of the wall lSections and arranged between thesame, vertically disposedI-beams .'resting uponV the base member andspaeing the walls, angular brackets carried byrthe I-beams and arranged.in spaced relation, the inner wall section being formed inunits with thelower'layer of each unit engaged .with the angular brackets on theI-beams, 'whereby any-one of the units may be displaced withoutdisplacing the other units, and means'provdving for thecontraetionland'expansion of the units under high temperature; o

2. Ina wall construction, spaced inner and outer wall Sections, I-beamsarranged between said wall Sections, the innerwall section being formedinv units with the lower layer of each unitforrned With 'angulari Lnotches to looely receive the inner cross porconsin.

tions of the I-bea-ms to provide for the expa-nson and contraction-ofthe members provded with said notches.

3. In a Wall construction, spaced lnner and outer wall Sections, a steelhousng enclosing the outer wall section, I-beams arranged be' tween saidwall Sections, U-Shaped members positoned in spacedrelation in the outerWall t section and havno' their side portons connected to the steelhousng and to one side of In testmony that I claim the foregoing I havehereunto set myhand at Milwaukee, in the county of Milwaukee and Stateof Wis- EDWARD A. REESE.

